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Ionis Pharmaceuticals (IONS) Shares Outstanding (2016 - 2025)

Ionis Pharmaceuticals has reported Shares Outstanding over the past 17 years, most recently at $163.3 million for Q4 2025.

  • Quarterly results put Shares Outstanding at $163.3 million for Q4 2025, up 3.42% from a year ago — trailing twelve months through Dec 2025 was $163.3 million (up 3.42% YoY), and the annual figure for FY2025 was $163.3 million, up 3.42%.
  • Shares Outstanding for Q4 2025 was $163.3 million at Ionis Pharmaceuticals, up from $161.1 million in the prior quarter.
  • Over the last five years, Shares Outstanding for IONS hit a ceiling of $163.3 million in Q4 2025 and a floor of $140.9 million in Q1 2021.
  • Median Shares Outstanding over the past 5 years was $143.3 million (2023), compared with a mean of $147.8 million.
  • Biggest five-year swings in Shares Outstanding: increased 0.57% in 2022 and later rose 10.06% in 2024.
  • Ionis Pharmaceuticals' Shares Outstanding stood at $141.2 million in 2021, then increased by 0.6% to $142.1 million in 2022, then increased by 1.61% to $144.3 million in 2023, then grew by 9.4% to $157.9 million in 2024, then grew by 3.42% to $163.3 million in 2025.
  • The last three reported values for Shares Outstanding were $163.3 million (Q4 2025), $161.1 million (Q3 2025), and $159.2 million (Q2 2025) per Business Quant data.